Paper product and method of making field

Abstract

Paper having improved curl and cockle properties for water based, ink jet printing applications and a method of producing them. The paper contains at least 50 pounds per ton of a material that is water soluble, that can be highly concentrated during application, has low viscosity and low hygroscopicity. The paper has a maximum Cockle Value of 0.25. Certain of the materials also provide water fastness.

1 . A method of manufacturing uncoated paper comprising 
 forming a wet web of cellulosic fibers,    applying to the web at least 50 pounds of a material per ton of paper,    said material being water soluble, able to be highly concentrated during application, having low viscosity at the high concentrations and having low hygroscopicity,    drying the web to provide an uncoated paper having a maximum Cockle Value of 0.25.    
     
     
         2 . The method of  claim 1  wherein said material is applied to the web prior to it being dried by heat.  
     
     
         3 . The method of  claim 1  wherein said material is a disaccharide.  
     
     
         4 . The method of  claim 3  wherein 
 the disaccharide is applied to the web in a solution having 20 to 50% disaccharide by weight.    
     
     
         5 . The method of  claim 3  wherein the disaccharide is sucrose.  
     
     
         6 . The method of  claim 3  wherein the disaccharide is maltose.  
     
     
         7 . The method of  claim 1  wherein said material is a monosaccharide.  
     
     
         8 . The method of  claim 1  wherein 
 the monosaccharide is applied to the web in a solution having 20 to 50% monosaccharide by weight.    
     
     
         9 . The method of  claim 8  wherein the monosaccharide is glucose.  
     
     
         10 . The method of  claim 8  wherein the monosaccharide is mannose.  
     
     
         11 . The method of  claim 1  wherein the material is corn syrup.  
     
     
         12 . The method of  claim 1  wherein the material is urea.  
     
     
         13 . The method of  claim 12  wherein 
 the urea is applied to the web in a solution having 20 to 50% urea by weight.    
     
     
         14 . The method of  claim 1  wherein the material is a salt of citric acid.  
     
     
         15 . The method of  claim 14  wherein 
 the salt of citric acid is applied to the web in a solution having 20 to 50% salt of citric acid by weight.    
     
     
         16 . The method of  claim 1  wherein 
 the material is applied to the web in a solution having 20 to 50% material by weight.    
     
     
         17 . A method of  claim 1  wherein said material is applied in an amount of 50 to 300 pounds per ton of paper.  
     
     
         18 . The method of  claim 17  wherein said material is applied in an amount of 75 to 250 pounds per ton of paper.  
     
     
         19 . A method of manufacturing uncoated paper comprising 
 forming a wet web of cellulosic fibers,    applying to the web at least 50 pounds of a disaccharide per ton of paper,    drying the web to provide an uncoated paper having a maximum Cockle Value of 0.25.    
     
     
         20 . The method of  claim 19  wherein said material is applied to the web prior to it being dried by heat.  
     
     
         21 . The method of  claim 19  wherein 
 the disaccharide is applied to the web in a solution having 20 to 50% disaccharide by weight.    
     
     
         22 . The method of  claim 19  wherein the disaccharide is sucrose.  
     
     
         23 . The method of  claim 19  wherein the disaccharide is maltose.  
     
     
         24 . A method of manufacturing uncoated paper comprising 
 forming a wet web of cellulosic fibers,    applying to the web at least 50 pounds of a monosaccharide per ton of paper,    drying the web to provide an uncoated paper having a maximum Cockle Value of 0.25.    
     
     
         25 . The method of  claim 24  wherein said monosaccharide is applied to the web prior to it being dried by heat.  
     
     
         26 . The method of  claim 24  wherein 
 the monosaccharide is applied to the web in a solution having 20 to 50% monosaccharide by weight.    
     
     
         27 . The method of  claim 26  wherein the monosaccharide is glucose.  
     
     
         28 . The method of  claim 26  wherein the monosaccharide is mannose.  
     
     
         29 . A method of manufacturing uncoated paper comprising 
 forming a wet web of cellulosic fibers,    applying to the web at least 50 pounds of a corn syrup per ton of paper,    drying the web to provide an uncoated paper having a maximum Cockle Value of 0.25.    
     
     
         30 . A method of manufacturing uncoated paper comprising 
 forming a wet web of cellulosic fibers,    applying to the web at least 50 pounds of a urea per ton of paper,    drying the web to provide an uncoated paper having a maximum Cockle Value of 0.25.    
     
     
         31 . A method of manufacturing uncoated paper comprising 
 forming a wet web of cellulosic fibers,    applying to the web at least 50 pounds of a salt of citric acid per ton of paper,    drying the web to provide an uncoated paper having a maximum Cockle Value of 0.25.    
     
     
         32 . A method of manufacturing uncoated paper comprising 
 forming a wet web of cellulosic fibers,    applying to the web at least 50 pounds of a salt of citric acid per ton of paper,    drying the web to provide an uncoated paper having water fastness.